Multiple-key lock.



J. J. MURPHY. MULTIPLE KEY LOCK. APPLICATION FILED MAY 9; 1906.

974,693, Patented Nov. 1,1910.

2 SHEETS-SHEET 1.

J.. J. MURPHY.

MULTIPLE KEY LOOK. APPLIGATION FILED MAY 9, 1906.

974,693., r Patented Nov. 1, 1910.

UNITED" STATES an JAMES 'J. MURPHY,

' manna-am LOCK.

Specificetio1r of I-ettrs Patent.

Application liliui'lllay.9', 1996 Serial No. 315,859.

To all whom it may. concern: s

Be it known that I, JA'Mns J; MURP Y, aciti'zen of the United States, residing at Terryville, ir'ithe county of. Lit'chfield and State oi Connecticut, 'hav ej invented a new and useful, Improvement i Multiple-Key Locks -n dolhe'r by. declarethe follow} ing, t 91 11 z'connection'with the the acco rawings and thecharacters ofre' marked thereon, to. be a' full, clear; exact "description of the same, and

- which said; drawingsg onsumt part of this speclficat d represent, in;'

Figur perspectiveview' of a lock constructs accordangejwith m invenm F g a wifiw fin rear elevation. 3 a view' clock with the cover remove showingltheff partsjin their locked positions.

7 Fig. 4 aflcorresponding view showing the parts of thelock in thepositions due to them a after the "guard-key has been operated V to throw dow'n't'he pivotal dog andso unlock the-main bolt attheheel thereof. Fig. 5 a

corresponding'view showing. the main bolt in its unlocked position and the secondary bolt in itsnormal position. Fig. 6a view of the lock-with the cover removed, as well as all ofthe contained parts "except the main which are shown in their locked-positions. Fig. 7 a view ofthe lock in longitudinal sectiomjtak en centrallyv I through the adjusting-eccentric. Fig. 7 a

view'zmvertical transverse section on the .line la- 610f Fig. .2 to show the relation of the supplemental pin-tumbler lock to the Fig. 8a detached plan view of I .oneof thetwoart'tumblerswith the supplemental part t ereof in'its locked position. Fig. 9 ajcorr'esponding view'with the supple'mental" -.part 11in. its: unlocked position.

Fig 10 a dot etlfplanlviewflof the main ,tiimblers; Fig; 11a corre-" sponding viewofiit one of the tumblersgl-"fFigr. 12-a detached -secondary bolt.- .Fig; 13 a p ew bf t e view 'of the' guard-keyflfFigt l l a view of a d po rs 'ik y-il Fi 1 ,set. Figt16a. viewfof tlie managerfs orsup- 50 plementahlock ke My inver'ition irel .to [an improvemenft in multiple-key' loc -i'of .the' type shown in S Patent-No. 666,697, granted' -IJanuary 29, 1901,1511 the application'of James Roche, the lock of this patent being a simple, come. v supplemental part of In carrying out 'ldcking-lever tumblers,

gaged with-and interlocked I .pact and convenient lock adapted'to be reset to a'very considerable range of different keys without removal from place and particularly designed to be used as a safe-deposit lock, though not limited to such use.

OF TERRYVILLE, CONNECTICUT, ASSIGNOR TO LOCK 00., OF 'T'ERRYVILLE, CONNECTICUT," CQRPOBATION.

Patented Nah-'1, iaio.

The special object of the present invention is to preclude the ossibil-ity of the surreptitious changing 'o the combination of such a lock while the box to which it is applied is open by setting its tumblers to a .ey

which would then be kept for-future use by the person who wroqg'fully changed the combination or by some one in him. Thus an-unscrupulous guard might reset the lock while he was in attendance league with upon the depositor holding the key to the v lock.

-With these ends in view, my invention consists in a multiple-key lock, having a twopart lever-tumbler comprising a'main part and a supplemental part constructed to be set in-a variety of posit-ions with respect to each other for coaction with -keys of difi'ereiit bittings, in combination with means for resetting the said tumbler by changing the positions of its partsrelative to each other,

and a supplemental lock'for locking the parts of the tumbler with respect to each other after they have been set.

' invention-further consists in a. multiple-key lock having a plurality of two-partlever-tumblers each comprising a main part and supplemental part. constructed to be' set ina varietyv ofpositions with respect to each other for coaction with keys of difierent bittings, in combination with an adjust-' ing-eccentriccoacting with all of the tumblers for resetting them by changing the positions of their parts relative to each other, and a supplemental losk for locking the ad'-v justing-eccentric.

My invention further consists in certain details of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

my invention as herein shown,,I employ a plurality of two-partmain part 2: and a supplemental part 3, main-part of each tumbler being centrally cut away to'gform a" deep large notch 4, in which the supplemental part 3 is .mainly loeach consisting of a the catedr' The forwardwall of the said notch 4 is formed with serrations 5 which are enby corresponding serrations 6, formed upon the'outer end of thesupplemental part 3, which is provided with a key-sweep ,7. The rear or in: ner end of the main part 2 of each tumbler is cut away and reduced to half the thick ness of therest of. the part and formed with a circular hole 8, which receives the arborlike' adjusting-eccentric 9, which passes through all of the tumblers, and by means of.

which thetwo members of the respective tumblers are mov ed with respect to each other and unlocked and then a ter readjust ment again moved with respect to each other" and locked and ri idly held in their locked positions, all wit out the removal of the tumblers from the lock. The rear or inner end of each of the supplemental parts 3- of a each tumbler is'also reduced in thickness to whic about half of thethickness of the remaining-portion of the part and formed with an elongated clearance-opening '10, through the said, eccentric alsoi passes, but which does not act upon the supplemental part on account of the elongated form of. this opening. The supplemental parts 3 of all'of the'tumblers are held against possible endwise movement underthe action ..0f the adjusting-eccentric by means of .a retainingpin 11, which passes through a verticallyelongated slot 12, formed in the supplemental part of each of the tumblers. The main part 2 of each of the tumblers is formed with a stump-slot 13 for the reception of the stump 14,'located near the outer'end of the main bolt 15, which itself rests upon the bottom of the case-16 of the lock. The supplemental part 3 of eachtumbler is formed key-sweep 27 with a locking-notch 28,.

with a' stump-slot 17, opening outlof the rear wall of a transversely-arranged stump-opening 18, receiving a stump 19, carried bythe secondary or auxiliary bolt 20. The supplemental part 3 of each tumbler is provided with a tumbler-spring 21, while the secondary bolt 20 is furnished with a spring '22 which holds-the secondary bolt 20 in its locked position in-case the depositcrs key 53- should lineup all of the tumblers at the time of. unlocking the main-bolt 15.

Y The main bolt 15 is formed with a short. .p

guide-pin 23, Fig. 6, entering a guide-slot 24, formed in the secondary bolt, Fig. 12. The said main boltis also formed with a clearance-slot '25 for the retaining-pin 11 and with a clearance-slot 26 for the adjusting-eccentric 9.. It is also formed with a formed in its heel for the reception; of the nose of a pivotal. dog 29, turning upon a pivot 30,,located in the bottom of; the case, and thrown into its locked position by a sprin 31 which also holds the doginits un locked position as shown b broken lines in Fig. 4 of the drawings. T is dog is thrown into its unlocked position by means of apin 32, carried by it and arranged to be engaged by an operating-bevel 33, formed upon the secondary bolt 20, which is formed with a clearance-slot 35 for the adjusting-eccentric 9, with a'key-sweep 36, with a stump-notch 37 for the reception of thestump 14 of the. mainbolt 15, and with a foot or guide 38. I particularly "wish to call attention to the fact that each tumbler as a tumbler is sepv arable between its main-bolt stump-slot and its key-sweep.

Itwill be understood that the main bolt 15- is slid back and forth directly upon-the bottom of the lock-case 1'6 and that the secondary-bolt 20 is adapted to slide back and forth directly upon the said main bolt, while the two-part locking-tumblers are suprimtension of its spring 22 for causing its oper- I ating bevel 33 to coast with the pin 32, by means of the guard-key. The lock-case 16 is provided with the usual cover 39,- which is furnishedvwith a sleeve 40, .inclosing a keyhub 41 of usual construction. .1

The mechanism thus far described is that of the patent referredto. In order tofac- 'complish'the specific objectof my present invention, I secure a pinion 42 upon the pro.- jecting end of 'the adjusting-eccentric 9. which extends through 'the bottom of the lock-case. This pinion 42 meshes into a'cor- -responding pinion 43 non-rotatably mounted upon the rojecting' outerend of the cylinder or p ug 44 of a pin-tumbler lock of any approved construction, locatedin a hole 45 formed for its reception in the cylinder 16; At its rear end theyplug 44 is provided with a combined stop and retaining-plate 4 6 held in place by screws 47. This supplemental lock is operated by an ordinary intumbler lock key 48 which, for convenience, I shall call the managers key. This key lifts the pins 49 of the lock into appro- "priate pin-holes 50-"formed in the lock-case and containing spiral springs 51, as shown by Fig. 7 4 y I The pin-tumbler lock just'described is a unitary mechanism organized independently of the other locking'mechanism of the lock and forms a supplemental lo'ck forlocking the adjusting eccentric 9 against being turned in either; direction for resettin' the lock to a new key as might conceivab be done surreptitiously even.in the brie interval during which the back of the lock is exposed in use by the opening of the safe deposit box to which it 1s applied. It will be understood, of course, that this supplemental lock is never used "except when it-is dhsired to reset the.;lockt o a new key. At

'all other times the main lock is used pre- 5 cisely as if the supplemcntal'lock were not :in existence. For the legitimate resetting of the lock to conform to the bittings of an: other k ey,.-the fn anaguefis key'48 is indispensable for it miist be used'to unlock the i supplementallock andleifect the turning of the eccentric through "the medium of the 'pini'ons 42 and 43. f

In usin 'the 'main lock, the guard-key52 is insertetlinto'the lock-and engaged with 1 the key-sweeps 7 of theisupplemental-parts are all ofthe locking-tumblers, with the effect of lifting the tumblers, so as to. bring the stump s'lot'sl7xof;the supplemental parts 3 of all of the tumblers -into alinement with the stump 19 upon the secondary bolt-20,

the key-sweep 36' of, which is engaged and.

' the bolt 20 moved from left to right, with the efiect of bringing its bevel --33 into engagement with thepin 32 of t-hepivotal dog,- 2 which is forced downward against the tension of its spring 31 and awayfrom the heelnotch 28 in the'main'bolt 15, the heel of which is now unlocked the spring passing which are-now-again lifted, so as to bring all oiitheir stump-slots 13 intoline with the stump 14 of the main bolt 15, which as the key is turned is shot back into itsunlocked position, at which-time the stump 14 enters 2 the stump-slots 13. As the main bolt 15 is shot back into its unlocked position the tail 29 of the dog 29 is engaged by the bevel 29? of thebolt, whereby the dog is'swung back 7 again into position for automatic reengage- 5 ment with the heel of the bolt when the same "is shot'back into its locked position during I the removal of the depo'sitorls. key 52 from the lock. j a The above description illustrates theordinaryiuse of the look. If nowit is desired to set the lock to a new depositors key, such as the key 54,-the 'old'depositorskey 53 is first introducedinto the lock and turned, so 1 that 'the two-part tumblers will be lifted for mh'bringing the stump-slots 13 into aline nent with-the bolt-stump14,'which is. thereby permitted togjust enter" the stump-slots 13, further movement of the, main bolt 15 being revented by the'blocking action'of the lock- 'mg dog 29, which has not been thrown down out of engagement with the heel of the main bolt 15' by thefsecondary bolt 20 under the action of the guard-key of which no use is made in resetting the lock'to a new depositors key. While the old' depositors key 53 is in this position, the managers key 48 is inserted into the cylinder 44 of the supple. mental pin-tumbler lock whereby the pins thereof are retired and the cylinder released after which itis' turned half a turn; The pinion 43 is correspondingly turned and with it the pinion 44 mounted upon the prorespond'ingly turned. 'This rotation of the adjusting eccentric will cause the temporary unlocking of the main and supplemental their serrations 5 and 6 being entirely separated from eachother. The old key 53 is now removed and the new depositors key 54 inserted into the lock and turned to lift the supplemental part 3- of each 'of'the lockingtumblers to correspond to the bittings of 1 the key. This result having been effected, the managers key 48 is turned back half a I jectingend of the eccentric 9 whichis corparts of eachtumblenas shown in Fig. 9,

turn, this movement being communicated through the pinions '43 and 42- to the adjusting-eccentric -9 which is turned back half a turn with the effect of relocking the supplemental parts 2 and 3 of each tumbler-again, but this time in their new positions of correspondence tot-he bittings of the new key 54. The lock is now operated, as before, with the guard-key 52 and-the key54, the key 53 being new useless inconnection with the lock.

It will thus be seen that by the addition of a supplemental lock to a 'lock-of-"the type of the multiple-key lockshown and described in Patent'No. 666,697 of January 29,

"1901, I- ani'enabled to guard against the sur reptitious resetting of the tumblers to a new v key during the brief exposure'of the back of the look when the box' to which it is applied is open. My design i's-thatthe key to the supplemental lock shall be kept by the manager of the safe depositvault and that it shall never'be brought into use except when 7 he is called upon to produce it by the -depositor, who cannot himself use it until'the box containing 1 the. lock 7 has been opened with the coiiperationo'f the bank officials who keep the guard-key. On the other I hand, the .ban'k ofiigiials cannot get "at ,the lock to use the managers key'as. the lock i'n'ust first be unlocked by-the use of the depos'it'ors key which the'depositor holds.

-..- I claim i i p :1; In a-mult iple-keylock; the combination I with a plurality" of twopa'rt-tumblers. the 2 respective partsIlof-whichare constructed to be .i'e'set forjco'actioii 'with diiferent keys, of

means for resetting the said tumblers, and a supplemental pin-tumbler lock fcrtlbeking the saidnni'eans'. Y

- 2. In a multiple-key lock, the combination- 5 an adjusting eccentric for resetting the said.

tumblers, a supplemental pin-tumbler lock,

and pinions inter osed between the eccentric and supplementa lock for. locking the said eccentric.

3. In a multiple-key lock, the combination with the case thereof, of two-part tumblers the respective parts of which are constructed to be re-set for. co-action with difierent keys, an-eccentric for resetting the said two-part tumblers, a supplemental pin-tumbler lock mounted in the lock-case, and pinions connecting the supplemental in-tumbler lock with the said eccentric which is held in its locked position by the said pinions and sup- 2 0 plemental pin-tumbler lock.

4. In a multiple-key lock, the combination with a lock-case, of aplurality of two-part tumblers the respective parts of which are constructed to be reset for co-action with difierent keys, a main bolt for co-action with the said tumblers, a key-way leading into the lock-case through the front thereof for the reception of' a key by which' the said two-part tumblers are operated, guardmechanism coacting with the said main bolt and arranged to be operated by a key also introduced through the front of the said lock-case, tumbler-resetting means, and a supplemental lock located within thesaid lock-case, connected with the said resettingmeans for locking the same, and arranged to be operated by means of a key introduced from the back of the said lock-case, whereby the supplemental lock can only be reached 40 for operation when the compartment provided with the lock has been opened by the operation of it's two-part tumblers and its "guard-mechanism by their respective keys.

5. In a multiple-key lock, the combination .45 with a lockscase, of a plurality of two-part tumblers the respective parts of which are constructed to be reset for coaction with different keys, a main bolt for coaction with the said tumblers, a key-way leading into v .50 the lock-case through the front thereof for thdreception of akey by which the said two; part tumblers are operated, guard-mecha-- nism coacting with the ,main bolt andtarranged to be operated by a key introduced 5 through the front of the said lock-case into the key-way aforesaid, tumbler resetting means, and a supplemental lock located within the said lock-case, connected with the said resetting means for locking the same, and arranged to bejoperated by means of a key introduced from theback of the said lock-case, whereby the supplemental lock can only be reached for operation when the compartment providedwith the lock has been opened by the operation ofits two-part tumblers and its guard-mechanism by. their re- 7 spective keys.

6. In a multiple-key lock, the combination with a lock case, of a plurality of two-part tumblers, the respective parts of which are constructed. tobe reset for coaction with different keys, a main bolt for coactionwith the said tumblers, a key-way leading into the lock-case through the front thereof for the reception of the key by which the said two-part tumblers are operated, guard-mechanism coacting with the main bolt and arranged to be operated by a key also introduced through the front of the said lock-case, tumbler resetting means, i and a self; contained supplemental lock made independent of the said two-part tumblers and guardmechanism, located within the said lock-case, connected with the said resetting means for locking the same, and having its own key- 35- way, whereby the said resetting means are prevented from being surreptitiously oper-' ated, by'the supplemental lock.

7 In a multiple-key lock, the combination, with a lock-case, of a'pluralityof two-part tumblers the respective parts, of which are constructed to be reset for co-action with different keys, a main bolt for coaction with the said tumblers, a key-way leading into the lock-case through the front thereof for the reception of the key by which the said two part tumblers are operated, ardmechanism coacting with the said mam-bolt and arranged to be operated by a key also with a lock-case, of a plurality'of two-part tumblers the respective parts of which are constructed to be reset for coaction with different keys, a main bolt for coaction with the saidtumblers, a key-way leading into the lock-case through the front thereof for the reception of a key by which the said twopart tumblers are operated, guard-mechanism coacting with the said main bolt and arranged to be operated by a key also introduced through the front of the said lockcase, tumbler-resetting means, and a supplemental in-tumbler lock located Within the said loc r-case and having its plug connected with the said resetting means for locking the same and arranged to be operated by means of a key introduced from the back of the lock-case:

9. In a multiple-key lock, the combina: tion with a lock-case, of a plurality of twopart tumblers the respectiveparts of which are constructed to be reset for coaction with different keys, a main bolt for coaction with 130 the said tumblers, a-key-way leading into the lock-case through the front thereof for the reception of a key by which the said two-part tumblers areoperated, guardmechanism coacting with the said main bolt and arranged to beope'rated by a key also introduced through the front of the said lock-case, an eccentric for use in resetting the tumblers,- and a supplemental lock con-v nected with the said eccentric for locking thesame and arranged to be operated by means of a key introduced into it from the back of the said lock-case.

10. In a multiple-key lock, the combina-' tion with a lock-case, of a plurality of twopart tumblers the respective parts of which are constructed to be reset for coaction with different keys, a main bolt for coaction with the said tumblers, a key-way leading into the lock-case through the front thereof for the reception of a key by which the said two-part tumblers are operated, uardmechanism coacting with the said main bolt and arranged to be operated by a key also introduced through the front of the said lock-case, an eccentric for use in resettin the tumblers, a supplemental lock arrange to be operated bya key introduced into it from the back of the said lock-case, and one or more pinions connecting the supplemental lock and eccentric whereby the eccentric is locked by the supplemental lock.

11.In a multiple-key lock, the combina' tion with a lock-case, of a plurality of twopart, tumblers the respective parts of which are constructed to be reset for coaction with "different keys, a. main bolt for coaction with the said tumblers, a-key-way leading into the lock-case through the front thereof for the" reception of a key bywhich the said twopart tumblers are operated, guard-mechanism coacting with the said, main bolt and arranged to be operated by a. key also introduced through the front of the said lockcase, an eccentric for use in resetting the said tumblers, a supplemental pin-tumbler lock located within the said lock-case, and

- the said tumblers, a key-way leading into I the reception of a key by which the said two-' part tumblers are operated, guard-mechapinions connecting the plug of the said pintumblerlock with the said eccentric which is lockedbythe saidpin tumbler lock.

" 12. In a multiple-key lock, .the combination with'a lock case, of a plurality of two-' part tumblers the respective parts-of which are constructed-to be reset for coaction with l different keys, a main bolt for coaction'with the lock-case through the front thereof for nism coacting with the said main bolt and arranged to be operated by a key alsointroduced through the front of the said lockcase, an eccentric for use in resetting the said tumblers, a supplemental pin-tumbler lock for locking theeccentric, a pinion mounted upon the eccentric, and a pinion mounted upon the plug of the pin-tumbler lock and meshing into the said pinion mounted upon the eccentric.

13. I11 a multiple-key lock, the combination with'a lock-case, of a plurality of twopart tumblers the respective parts of which are constructed to be reset for coaction with different keys, a main bolt for coaction with the said tumblers, a key-way leading into the lock-case through the front thereof for the reception of a key by which the said twopart tumblers are operated, guard-mechanism coacting with the said main bolt and" arranged to be operated by a key also introduced through the front of the said lockcase, an eccentric for use in resetting the said tumblers, a supplemental pin-tumbler lock located within the said lock-case and arranged to be operated by a key introduced from the back of the said lock-case, a pinion mounted upon the eccentric at the rear end thereof, and a pinion mo'u-nted upon the rear end of the plug of the pin-tumbler lock and meshing into the said pinion mounted uponthe eccentric which is thus locked by the said supplemental pin-tumbler lock.

14. In a multiple-key lock, the combination with a lock-case, of a plurality of twopart lever-tumblers the respective parts of which are constructed to. be reset for coaction with different keys, a main bolt for coaction with the said tumblers, a key-way leading into 'the lock-case through the front thereof for the reception of a key by which the said two-part lever tumblers are oper-" the compartment provided with the lock has been opened b the operation of its twopart tumblers an its guard-mechanism by their respective keys.

1 5. In a multiple-key lock, the combination with a lock-case, of a plurality of twopart lever-tumblers the respectiveparts of which are constructed to be reset for coaction with different keys, a main bolt for co action with the said tumblers, a key-way leading'into the lock-case through the front thereof for the reception of a key by which the said two-part tumblers are operated,

guard-mechanism coacting -with the said.

main-bolt and arranged to be operated by a key also introduced through the front of'the said lock-case, an adjusting eccentric for use in resetting the said tumblers, and a supplemental lock located within the said lockcase connected with the said eccentric for locking the same and arranged to be operated by means of a key introduced through a special supplemental lock key-way.

16. In a multiple-key lock, the combina tion with a lock-case, of a plurality of twopart lever-tumblers the respective partsof which are constructed to be reset for coaction with different keys, a main bolt for coaction with the said tumblers, a key-way leading'into the lock-case through the front thereof for the reception of a key by which the said two-part tumblers are 0 erated, guard-mechanism coacting with t c said main bolt and arranged to be operated by a key also introduced through the front of the said lock-case, an adjusting eccentric for resetting the said two-part lever-tumblers, a supplemental pin-tumbler lock located within the said lock-case, and pinions connecting ing witnesses.

JAMES J. MURPHY.

Witnesses:

OTIS B. HOUGH, HARRY C. CLow. 

